Question

Im a bit lost or mind is not working as it should. I read other questions around but can get mine to work.

I got this array:

Array
(
    [89] => Array
        (
            [0] => 16
            [1] => 2
        )

)

And i got this :

Array
(
    [84] => Array
        (
            [0] => 2
        )

    [83] => Array
        (
            [0] => 2
        )

    [87] => Array
        (
            [0] => 2
            [1] => 3
        )

    [88] => Array
        (
            [0] => 2
        )

    [89] => Array
        (
            [0] => 2
        )

    [90] => Array
        (
            [0] => 2
        )

)

I should get all results but on key 89 i should get the value from first array.

Array
(
    [84] => Array
        (
            [0] => 2
        )

    [83] => Array
        (
            [0] => 2
        )

    [87] => Array
        (
            [0] => 2
            [1] => 3
        )

    [88] => Array
        (
            [0] => 2
        )

    [89] => Array
        (
            [0] => 16
            [1] => 2
        )

    [90] => Array
        (
            [0] => 2
        )

)

Array merge wont work 🙁 .
Also after i get the result if the first array its :

Array
(
    [89] => Array
        (
           [1] => 2
        )

)

The resulting array should update to one record.

Im sure its a 1 min code for you gurus but arrays always been a pain for me.

Thanks

UPDATE : if i use array_merge_recursive it wont keep my keys :

print_r(array_merge_recursive($array1,$array2));
Array
(
    [0] => Array
        (
            [0] => 16
            [1] => 2
        )

    [1] => Array
        (
            [0] => 2
        )

    [2] => Array
        (
            [0] => 2
        )

    [3] => Array
        (
            [0] => 2
            [1] => 3
        )

    [4] => Array
        (
            [0] => 2
        )

    [5] => Array
        (
            [0] => 2
        )

    [6] => Array
        (
            [0] => 2
        )

)

Answer 1

array_merge_recursive should do the job; look at the documentation for more pointers: http://www.php.net/manual/en/function.array-merge-recursive.php

EDIT
The function behaved differently than I initially thought, here´s a different version of the function to solve your problem:

function array_merge_recursive_distinct(array &$array1, array &$array2) {
  $merged = $array1;

  foreach($array2 as $key => &$value) {
    if(is_array($value) && isset($merged[$key]) && is_array($merged[$key])) {
      $merged[$key] = array_merge_recursive_distinct($merged[$key], $value);
    } else {
      $merged[$key] = $value;
    }
  }

  return $merged;
}

Thanks to the community of php.net http://www.php.net/manual/en/function.array-merge-recursive.php#92195